Corrosion inhibiter for acid washing of metal, clearing solvent composition and washing method of metal

摘要

The cation characteristic constitution unit which possesses the structure of specification (A) the anionic characteristic constitution unit which at least possesses 1 kinds and the structure of specification (B) at least 1 kinds, and the containing sulfur constitution unit of specification the amphoteric high polymer which it possesses (C), (P) including it becomes, the corrosion inhibiter for acid washing of metal is supplied.